Answer : D
Alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure
The most commonly used permanent magnets are made of ALNICO (An alloy of aluminium, nickel and cobalt). Magnets used in refrigerators, speakers, fridge and magnetic compass are some familiar examples of a permanent magnet. Neodymium magnets are the strongest and the most powerful magnets on the Earth
Answer : C
Answer : A
Answer : B
Answer : C
Answer : B
Answer : A
Answer : C
Answer : D
Answer : D
Answer : B
Answer : C
Answer 😀
Answer : B
Answer : C
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